Abstract: The study of the incorporation of tire rubber waste in concrete has been conducted for over ten years. Its actual application in piles, however, especially in bored piles, has no record in technical or scientific literature. The motivation for this research has derived as much from environmental convenience as from sustainability, and it aims at validating the use of this concrete in the manufacturing of small caliber bored piles without the use of stabilizing fluid, which is the recommended foundation for small and medium-sized constructions in the Northwest of São Paulo State. Rubber waste is a large-scale globally produced environmental liability of extreme relevance, especially as a substitute for non-renewable natural materials. In order to assess this variety of concrete in foundations, six bored piles have been manufactured, 0.3m in diameter and 6m long, three of which were made of conventional concrete, and the remainder used rubber waste in its composition. The results obtained in terms of compression resistance, elasticity modulus, load capacity and load transfer to the ground have validated the use of rubber waste in the manufacturing of bored piles